Nothing critical changed from Horde 3.3.8->3.3.9 in the memcache
code that would cause this (at least nothing that easily stands
out). You will need to provide an error message to help track this
down.

No error message anywhere. Do you have some idea what I have to change
to get a error message?

Nothing critical changed from Horde 3.3.8->3.3.9 in the memcache code
that would cause this (at least nothing that easily stands out). You
will need to provide an error message to help track this down.